(19)
(11) EP 3 908 748 A1

(12)

(43) Date of publication:
17.11.2021 Bulletin 2021/46

(21) Application number: 20700636.2

(22) Date of filing: 08.01.2020
(51) International Patent Classification (IPC): 
F03D 9/25(2016.01)
H02K 7/18(2006.01)
 F03D 80/60(2016.01)
H02K 9/08(2006.01)
(52) Cooperative Patent Classification (CPC):
H02K 7/1838; H02K 9/08; F03D 9/25; F03D 80/60; Y02E 10/72
(86) International application number:
PCT/DK2020/050004
(87) International publication number:
WO 2020/143887 (16.07.2020 Gazette 2020/29)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 10.01.2019 US 201962790555 P
30.01.2019 DK PA201970066

(71) Applicant: VESTAS WIND SYSTEMS A/S
8200 Aarhus N (DK)

(72) Inventors:
  • MONGEAU, Peter
    Conway, New Hampshire 03813 (US)
  • GÜNDÜZ, Mustafa
    23570 Lübeck (DE)

(74) Representative: Vestas Patents Department 
Hedeager 42
8200 Aarhus N
8200 Aarhus N (DK)

   


(54) IMPROVEMENTS RELATING TO COOLING OF ELECTRICAL GENERATORS IN WIND TURBINES